People who suddenly stop taking large doses of depressants can experience including anxiety, insomnia, tremors, delirium, convulsions, and possible death.

People who suddenly stop taking large doses of depressants can experience withdrawal symptoms including anxiety, insomnia, tremors, delirium, convulsions, and possible death. It’s the same case as the effect of alcohol in which symptoms vary depending on the dosage administered. Whether small or large amounts, the potential of alcohol or depressant’s regular use could lead to addiction. 

The answer would be fracture.

The freezing point of the ice is lowered because of the rock salt which then allows the ice to observe heat from the ice cream mixture without it melting.